<!DOCTYPE HTML>
<meta charset="utf-8">
<title>Paint Containment Stacking Context Reference</title>
<link rel="author" title="Psychpsyo" href="mailto:psychpsyo@gmail.com">
<style>
  div {
    width: 100px;
    height: 100px;
    background-color: green;
  }
</style>
<div></div>
Test succeeds if there is no red.
